Assess spring-util block-logs tool (and applicability to ship-logs)

[bhazzard]

Apparently the block-log tools in spring-util are not reliable.

Depending on level of usage, consider deprecation.

On the other hand, if they are useful:

• We would need to spend time to get them working reliably
• Add tests
• And cosinder adding similar functionality for ship-logs...
  • ~print~
  • make_index
  • trim
  • ~extract blocks~
  • split
  • merge

[bhazzard]

• Assess what we DO have tests for
• Determine what we know is working reliably (if it isn't then it must not be used)